当前位置: X-MOL 学术Small › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
In Situ Growth of Pd Nanosheets on g‐C3N4 Nanosheets with Well‐Contacted Interface and Enhanced Catalytic Performance for 4‐Nitrophenol Reduction
Small ( IF 13.0 ) Pub Date : 2018-07-19 , DOI: 10.1002/smll.201801812
Kai Gu 1 , Xueting Pan 1 , Weiwei Wang 1 , Junjie Ma 1 , Yun Sun 1 , Hailong Yang 1 , Heyun Shen 1 , Zhijun Huang 2 , Huiyu Liu 1
Affiliation  

Loading novel metal nanosheets onto nanosheet support can improve their catalytic performance, but the morphological incompatibility makes it difficult to construct a well‐contacted interface, which is of particular interest in supported catalysts. Herein, Pd nanosheets (Pd NSs) are supported onto graphitic carbon nitride nanosheets (CNNSs) with intimate face‐to‐face contact through an in situ growth method. This method overcomes the limitations of the morphological incompatibility and ensures the intimate interfacial contact between Pd NSs and CNNSs. The nitrogen‐rich nature of CNNSs endows Pd NSs with abundant anchoring sites, which optimizes the electronic structure and improves the chemical and morphological stability of Pd NSs. The supported Pd NSs demonstrate high dispersion and exhibit largely enhanced activity toward the reduction of 4‐nitrophenol. The concentration‐normalized rate constant is up to 3052 min−1 g−1 L, which is 5.4 times higher than that obtained by unsupported Pd NSs. No obvious deactivation is observed after six runs of the recycling experiments. It is believed that the supported novel metal nanosheets with the intimately contacted interface may show promising applications in catalysis.

中文翻译:


Pd 纳米片在 g-C3N4 纳米片上的原位生长,具有良好接触的界面和增强的 4-硝基苯酚还原催化性能



将新型金属纳米片负载到纳米片载体上可以提高其催化性能,但形态不相容性使其难以构建良好接触的界面,这在负载型催化剂中特别令人感兴趣。在此,通过原位生长方法将钯纳米片(Pd NS)支撑在石墨氮化碳纳米片(CNNS)上,并以面对面的方式紧密接触。该方法克服了形态不相容的限制,确保了 Pd NS 和 CNNS 之间的紧密界面接触。 CNNS的富氮性质赋予Pd NSs丰富的锚定位点,从而优化了电子结构并提高了Pd NSs的化学和形态稳定性。负载的 Pd NSs 表现出高分散性,并且对 4-硝基苯酚的还原活性大大增强。浓度归一化速率常数高达3052 min −1 g −1 L,比无负载的Pd NSs 获得的速率常数高5.4倍。六轮回收实验后没有观察到明显的失活。据信,具有紧密接触界面的负载型新型金属纳米片可能在催化领域显示出有前景的应用。
更新日期:2018-07-19
down
wechat
bug